Machine for delivering sheets



Filed Jan. 18, 1954 5 Sheets-Sheet 1 ||l lllllllllllllllllllllllllllllllllll'L INVENTOR J .7

4 ATT NEY Dec. 17, 1935. KURTH MACHINE FOR DELIVERING SHEETS Filed Jan.18, 1934 5 Sheets-Sheet 2 lNVENTOR AT RNEY.

Dec. 17, 1935. H. KURTH .MAGHINE FOR DELIVERING SHEETS 5 Sheets-Sheet 5Filed Jan. 18, 1954 INVENTORJ c BY 7;:

ATTORNE Dec. 17, 1935. H. KURTH I MACHINE FOR DELIVERING SHEETS 5Sheets-Shee t 4 Filed Jan. 18, 1934 INVENTOR 7W 1W,

.1 I ATTO EY Dec. 17, 1935. I KURTH 2,024,583

MACHINE FOR DELIVERING SHEETS Filed Jan. 18, 1934 5 Sheets-Sheet 5INVENTOR 1% am,

ATTORNEY.

Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE MACHINE FORDELIVERING SHEETS Herman Kurth, Newark, N. J.

Application January 18, 1934, Serial No. 707.086 5 Claims. {01. 271-57)can be delivered and the machine .automatically stopped.

A further improvement is the provision of cutoff which delays thestopping of the motor in order that the machine will not stop with asheet in transit but will continue until the last sheet is free of thefeeding device.

The invention also relates'to certain details of construction which willbe hereinafter more fully described and finally embodied in the clausesof the claim.

The invention is illustrated in the accompanying drawings in whichFigure 1 is a front view of an improved machine, embodying my invention.Figure 2 is a rear view of the machine shown in Figure 1. Figure 3 is aside view of the machine showing the left hand side. Figure 4 is a sideview showing the right hand side with various parts broken away to morefully illustrate some of the parts in the inside of the machine. Figure5 is a detail section of the means for guiding the rear end of a wiperthat feeds the sheets from the stack. Figure 6 is a diagrammatic view ofthe various parts that require electrical connection and of the circuitsthat connect them. Figure 7 is a perspective view of the pad that feedsthe sheets successively from the stack.

The machine is preferably portable. It comprises a base ill on which thecasing l I is mounted, the casing enclosing a frame I2 011 which themajor part of the delivery mechanism is mounted. On the frame I2 is theholder H for supporting the stack S of sheets of paper or othermaterial. In the present showing the machine is one for counting anddelivering paper money. The stack S of sheets rest on flanges l3 on theends and. at the rear of holder H leaving the bottom of the holderpractically open for the positive engagement of the bottom sheet by thewiper or feeder W. The stack of sheets is held flat by a weight orfollower M which follower has an additional function in acting to closea circuit to cause the machine to halt when the last sheet leaves theholder. This functioning will be described later.

Under the open bottom of the holder H, I place a means for successivelyremoving a sheet at a time from the bottom of the stack. The preferredform comprises a wiper or feeder W secured .at

one end to the drum D fastened on the shaft S. 5

The wiper is in the form of a cushion I5 preferably of soft rubber witha cover [6 of rubber or the like slightly roughened or provided withminute pebbles, the face I! being the part that engages the sheets. Thepad is provided with a recess I5 to clear the flange l3 at the rear ofthe holder H. The pad, otherwise extends virtually across the wholewidth of the holder. The front edge of the wiper is tapered or inclinedas at 18 to engage the bottom sheet gradually in order that the wholeface I! of the wiper engages the bottom sheet at practically the sametime. It will be noted also that the centre of the drum D is under therear part of the holder H which prevents the wiper from coming up 20against the stack until the whole wiper is ready to engage the stack.The rear end of the wiper is guided by cam slots IS in which areprojections which are secured to the wiper. The form shown comprises theshaft 20 extending across the wiper with its ends provided with therollers 2|. Therollers are in the cam l9 and not only guide the rear endof the wiper up against the stack when the front edge of the wiperengages the stack but prevents any excess swing of the wiper when it isat the bottom of the drum. The cam slot I9 is wider at the part thatextends forwardly under the drum as at 22. The wiper is thus relieved inits contact with the curved wall 23 that extends from the bottom of theholder H concentric to the centre of the drum D for the major part ofits length but is tangential at the lower part 24. The wall 23 extendsdownward beyond 24 to form the wall 25 to provide the rear wall of areservoir that receives the sheets in a new stack at 26. The front wall21 of the reservoir can swing outwardly on the pivot 28 and is held inplace by a spring 29. The base H) is depressed at 30 and the front walls21 of the reservoir is cut out at 3|. This allows the fingers .and thumbto be placed over and under the stack 26 to withdraw it withoutdisturbing it as the wall 21 readily swings outwardly until the stackclears it and then falls back into place.

Near each end of the holder H on the rear face is a cut out portion 32which receives a soft rubber finger 33. These fingers are provided withbent and flexible ends 34 which extend from the bottom of the rear wall35 of the holder and are stiff enough to resist the passage of a sheetthat attempts to follow the bottom sheet out of the hopper. Thesefingers insure that only one sheet at a time follows the pad or wiper Waround the drum to the reservoir. The rubber fingers are shown assecured by the clips 38 held in place against the fingers by the bolts37. These fingers may be installed in any number but for paper money,two, one near each end, are found sufficient.

The shaft S is operated from the motor W, usually by the worm 38 and theworm-gear 39. The shaft is provided with a sleeve 46 insulated from theshaft and having a strip 4| of insulation on its face. The sleeve actsas a connector for two terminal posts 42 and 43 except when theinsulation 4| is in line with the contacts 42 and 43. This device actsin conjunction with another circuit and is for the purpose of carryingthe current to the motor after the motor is otherwise shut off whichinsures the complete delivery of the last sheet instead of stopping themotor with a sheet still between the wiper and the wall 23.

The motor H is equipped with a brake 44 which is normally operative forstopping the motor but which is held' inoperative by the magnet 45 whichis in circuit with the motor and the con tacts 42 and 43. This insuresthe stopping of the motor when the insulated strip 4| bridges the twocontacts 42 and 43 and the other circuit to the motor has been broken byother mechanism. This brake insures the stopping of the feeding deviceor wiper before it engages another sheet but only after the previoussheet has been completely delivered. The circuits controlling thesevarious devices will be described later.

The machine is equipped with a mechanism for automatically delivering apre-determined number of sheets after which the delivery mechanism ofthe machine stops. The mechanism for halting the machine is arranged toselectively control the'motor and to indicate the total number of sheetsfed. The mechanism as shown comprises a pinion 46 on the main shaft 3which pinion operates an idle gear 41 on a shaft 48 which turns a pinion49 which operates a.- large gear 50. The large gear 50 is fastened on ashaft 5|. The gearing hasa ratio that causes one hundred revolutions ofthe wiper and shaft S to rotate the shaft 5| once. The shaft 5| isprovided with: a disc 52 on the face of which are numerals from to I00which can be seen through the opening 53 in the casing of the machine.The disc 52' also actuates' a counter 54, the shaft of which counter hasa tooth 55 operated by a tooth 56 on the disc 52 which registers eachhundred sheets counted. By reading the counter and disc the totalhundreds on the counter and fraction of hundreds on the disc can beascertained at any time.

On the shaft 5| are one or more trip-plates 51 which are provided ontheir peripheries with notches 58. These plates 51 are used forregulating the number of sheets to be delivered. For instance, one platehas one notch which is used for actuating the motor stopping mechanismafter one revolution of the plate which insures the feeding of onehundred sheets. One plate has say, ten notches and this" controls themachine to feed only ten sheets at a time. Actuated by each of thetrip-plates 51 is a contact switch comprising a terminal 59 of springmetal and a second terminal 60 of spring metal which contacts all have anormal tendency to spring apart as the contact 59 is limited in itsmovement by the stop 6|. When a plate actuating a contact in circuitrevolves to bring a notch 58 opposite the end of the contact 60 which ispreferably provided with a small roller the end of the contact springsinto the notch, the contacts spring apart and the circuit is broken.This cuts off this circuit from the motor which, however, is operatedthrough another circuit until the last sheet is fully delivered but isthen cut off through the operation of contacts" and 43 being engaged bythe insulated strip 4|. The trip-plate delivering ten sheets for eachpartial rotation has ten notches 58' assuming a complete rotation for100 sheets, the plate regulating the machine for twenty-five sheets hasfour notches and the other accordingly.

The selection of trip-plate is made by means of an indicating switch 62comprising a rotatable knob 63 with a' switch arm 64 adapted forengagement with the buttons 65. The switch arm 64 is mounted on theshaft 66 which forms a binding post 61 for a wire and the buttons 65 areeach connected by the terminal 68 with a wire. To insure the securepositioning of the switch the index plate 69 is arranged on the shaft 66and has indentations 10 into which the end of the arm fits to hold theindex plate and shaft in place. The index plate is yieldingly held inposition by the spring 12.

A device for cutting the current from the motor when the last sheet inthe hopper H leaves the hopper utilizes the follower l4 which includesmaterial that will electrically connect the two terminals 13 and 14under the stack. The terminals are preferably on spring arms which bearup against the bottom of the stack S. The stack acts as an insulatingmedium but when the last sheet leaves the stack the follower |4 connectsthe two terminals 13 and 14. The circuit of which these terminals are apart will be described hereinafter and includes a magnet 15 which whenenergized pulls down an armature 16 on an arm 11'. The arm 11 isnormally held up by a spring 18 fastened to a support such as the arm 19which also acts to pivot the arm 11 as at 80. The arm carries twocontacts 8| and 82, the switch contact 8| cooperating with the fixedcontact 83 and the contact 82 co-operating with the contact 84. When thecontacts 8| and 82 are in co'ntact to complete the circuit the armatureis lifted but allows one end to rest on the core 85 of the magnet. Thisis due to the armature 16 being pivoted as at 86 to the arm 11 near oneend of the armature. This arrangement facilitates the attraction of thearmature by the core.

A safety switch 81 is installed in the main circuit for easy shuttingoff of the current when the machine is being charged without pulling outthe plug fitting in the socket 88.

It will be obvious that when the shaft S is stopped with the terminals42 and 43 resting on the strip 4| of insulation a direction connectionto the motor must be available which will, however, in turn, be shut offbefore the strip 4| shuts off the motor.

Such a circuit is controlled by a starting switch 89 having a push knob90 on a lever 9| normally held open by a spring 92. When the switch knob90 is pushed into the terminal 93 it connects the motor to start it andwhen the switch arm 64 is 70 on the continuous button marked C themagnet is energized which'hclds the armature 95 on the lever 9| to keepthe circuit closed and it remains closed until either the trip-plates 51or the follower |4 break this circuit through the switch ii. The leverBI has a connection 96 at the top for completion of the circuit.

The operation of the machine is as follows:-

The follower It is raised and a stack of sheets, for instance papermoney, is placed in the holder H and the follower M is replaced. Theswitch 81 is turned on and the machine is ready for operation. The motoralways stops with the shaft S in a position that brings the insulation4| opposite the contacts 42 and 43 which precludes the starting of themotor through these contacts. Therefore, to start the machine the switchknob is pushed in. On the diagram in Figure 6 it will be seen that thisconnects the two main wires 5? and 95 with the motor M through wires 59,Edii, switch 82-8 5 wires IUI and I02 to the motor and from the switchthrough wire I03, switch 8i-83, wires IM and I05 to contact 42 and thusto the main wire 98 which completes the circuit to the motor. The motorstarts as the circuit also releases the brake through magnet 45.

The shaft S rotates the drum and carries the wiper W around to engagethe bottom of the stack S and remove a sheet at every revolution andtally the number on the indicators visible through the opening 53. Thisis assuming that the trip-plate marked 0 for continuous feeding has beenplaced in circuit with the switch arm 5 5. In this case the wire Hitcarriesthe current to the magnet 5 of the switch 89 and then throughwire it? to wire I53 and also from the switch arm 64 through wire I58 towire I95. When the last sheet leaves the hopper the follower it connectsthe terminals I3 and M. This carries current from the-main wire 97through wire we, contact I3, follower I4, contact I i, wire lit? to themagnet 15 and then through wire III to main wire 58. When the magnet I5is energized it pulls the arm ll! down and this opens the switches atand 82 which cut off the motor from these connections. At this time asheet is in transit between the wiper W and the wall' 23. Thisnecessitates the finish of the delivery. To accomplish this the currentstill flows through wire 58, contact 52, sleeve 45, contact 43, wire N32to the motor and through main wire 5?. When the insulation it, however,bridges the contacts s2 and is which is at the time the wiper W releasesthe last sheet to the reservoir on the new stack 25, this current is cutoff and the motor stops.

When a pre-determined number of sheets are I required, say 10 sheets,the switch arm 64 is placed on button marked I5 and this places theswitch 62 in circuit with the wire H2, contacts and 5E and wire I itwhich connects with wire Hi5 and then through the main wire 93. Thecurrent also passes through wire 158 to wire I05, switch 32, wires HlI,I52 through the motor to wire 9?. This circuit to the motor is brokenwhen the contacts se and 66 are separated by allowing the end of contact55 to enter a notch 53 in the trip-plate 5i above these contacts. Themotor, however, continues delivery until shut off by the insulated stripM as before.

It will be noted that a signal light H4 is connected to the main wire 91by wire I I5 and to wire IIG by wire H5. This is for the purpose oflighting the light when the magnet I5 is energized to stop the motor byopening the switches BI and 82. The lighting of this light indicatesthat the machine has stopped. The operator then opens switch 87 andstarts the machine again by pushing the starting button 90.

It will be evident that the parts can be altered in proportion and formand variously disposed without departing from the scope of my invention.

1. A machine for delivering sheets comprising a frame, a holder in theframe, a reservoir below the holder, a curved wall extending from theholder to the reservoir, a wiper rotatable under the holder, the holderhaving a bottom that is open for engagement of a stack in the holder bythe wiper, means for rotating the wiper to pass it under the holder andalong the curved wall, and means for guiding the wiper in contact withthe curved wall, said wall diverging from the path of the wiper adjacentthe reservoir whereby a sheet is released for descent into thereservoir.

2. A machine for delivering sheets comprising a frame having a holder atthe top, the holder having the bottom provided with means for supportinga stack but having the bottom open to permit contact of a feedingdevice, a feeding device for removing a sheet at a time from the bottomof the stack, means for relieving the feeding device of the sheets sofed, a motor for operating the feeding device, and means for halting themotor, said means having a delayed action whereby the feeding devicestops only after the complete delivery of a sheet.

3. A machine for delivering sheets comprising a holder for a stack ofsheets, a wiper for removing a sheet ata time from the stack, anelectric motor for operating the wiper, a set of contacts under thestack, a follower on the stack and adapted to electrically connect thecontacts when the last sheet is removed from the stack, a make and breakdevice actuated by the completion of the circuit through the followerfor breaking the circuit to the motor, and said circuit including themotor, the make and break device and the contacts.

4. A machine as set forth in claim 3 with an additional circuitincluding a stop device for continuing the rotation of the motor and thewiper and designed to close the additional circuit only after the lastsheet has been completely delivered from the stack.

5. A machine for delivering sheets comprising a frame having a holder atthe top, the holder having the bottom provided with means for supportinga stack but having the bottom open to permit contact of a feedingdevice, a feeding device for removing a sheet at a time from the bottomof the stack, a motor for operating the feeding device, and means forhalting the motor, said means having a delayed action whereby thefeeding device stops only after the complete delivery of a sheet.

HERMAN KURTH.

